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이 문서에서는 PHP 중국어 웹사이트 매뉴얼 풀어 주다
(PHP 4 >= 4.3.0, PHP 5)
stream_set_timeout — Set timeout period on a stream
$stream
, int $seconds
[, int $microseconds
= 0
] )
Sets the timeout value on stream
,
expressed in the sum of seconds
and
microseconds
.
When the stream times out, the 'timed_out' key of the array returned by
stream_get_meta_data() is set to TRUE
, although no
error/warning is generated.
stream
The target stream.
seconds
The seconds part of the timeout to be set.
microseconds
The microseconds part of the timeout to be set.
成功时返回 TRUE
, 或者在失败时返回 FALSE
。
版本 | 说明 |
---|---|
4.3.0 | As of PHP 4.3, this function can (potentially) work on any kind of stream. In PHP 4.3, socket based streams are still the only kind supported in the PHP core, although streams from other extensions may support this function. |
Example #1 stream_set_timeout() example
<?php
$fp = fsockopen ( "www.example.com" , 80 );
if (! $fp ) {
echo "Unable to open\n" ;
} else {
fwrite ( $fp , "GET / HTTP/1.0\r\n\r\n" );
stream_set_timeout ( $fp , 2 );
$res = fread ( $fp , 2000 );
$info = stream_get_meta_data ( $fp );
fclose ( $fp );
if ( $info [ 'timed_out' ]) {
echo 'Connection timed out!' ;
} else {
echo $res ;
}
}
?>
Note:
This function doesn't work with advanced operations like stream_socket_recvfrom() , use stream_select() with timeout parameter instead.
This function was previously called as set_socket_timeout() and later socket_set_timeout() but this usage is deprecated.
[#1] jack.whoami [2014-05-27 20:25:02]
Just in case someone stumbles into my situation... I was trying to get the microseconds part to work and it just wasn't working as expected.
Assuming blocking mode is true and I use
<?php stream_set_timeout($s, 1, 0);?>
I get a 1s delay as expected. However when I do
<?php stream_set_timeout($s, 0, 500);?>
I expect a 500microsecond delay but I get no delays at all. However when i do this
<?php stream_set_timeout($s, 0, 500000);?>
I get a 500 microsecond delay which is what I was expecting
[#2] emailfire at gmail dot com [2011-05-18 01:28:20]
This function seems to have no effect when running as a CLI script, see http://bugs.php.net/bug.php?id=36030
[#3] hamishcool3 at yahoo dot co dot uk [2010-10-29 09:29:35]
In case anyone is puzzled, stream_set_timeout DOES NOT work for sockets created with socket_create or socket_accept. Use socket_set_option instead.
Instead of:
<?php
stream_set_timeout($socket,$sec,$usec);
?>
Use:
<?php
socket_set_option($socket, SOL_SOCKET, SO_RCVTIMEO, array('sec'=>$sec, 'usec'=>$usec));
socket_set_option($socket, SOL_SOCKET, SO_SNDTIMEO, array('sec'=>$sec, 'usec'=>$usec));
?>
[#4] mildly dull at terriblyclever dot com [2009-11-29 17:53:23]
I didn't have much luck with the suggestions below (although I likely applied them wrong).
Instead, I used stream_context_create() and set an http option for timeout. I fed that context into file_get_contents() and voila!
To my desperate friend below: the https transport can also use the http stream context options. I haven't verified this works as I don't have a slow responding ssl to test on. But if you are still stressing, give the below a shot (you may need to modify a bit...)
<?php
$timeout = 5*60;
$options = array(
'http'=>array(
'method'=>"GET",
'header'=>"Accept-language: en\r\n",
'timeout' => $timeout
)
);
$context = stream_context_create($options);
$contents = file_get_contents($source, false, $context);
?>
Yes...that is a 5 minute timeout.
[#5] Martin Butt - martin at anti_spambutt.cx [2007-03-12 09:39:05]
Here is a working example for loops:
<?php
// Timeout in seconds
$timeout = 5;
$fp = fsockopen("www.server.com", 80, $errno, $errstr, $timeout);
if ($fp) {
fwrite($fp, "GET /file.php HTTP/1.0\r\n");
fwrite($fp, "Host: www.server.com\r\n");
fwrite($fp, "Connection: Close\r\n\r\n");
stream_set_blocking($fp, TRUE);
stream_set_timeout($fp,$timeout);
$info = stream_get_meta_data($fp);
while ((!feof($fp)) && (!$info['timed_out'])) {
$data .= fgets($fp, 4096);
$info = stream_get_meta_data($fp);
ob_flush;
flush();
}
if ($info['timed_out']) {
echo "Connection Timed Out!";
} else {
echo $data;
}
}
?>
[#6] Dianoga (dianoga7 [at] 3dgo.net) [2006-11-20 06:33:09]
I have found that in order to actually stop the socket from timing out the script, you must call stream_get_meta_data and check for a timeout within the loop reading from the socket.
Example:
<?php
$sock = fsockopen($host, 80, $errno, $errstr, 30);
if(!$sock){
echo "Unable to get server status";
}else{
$out = "GET /server.php HTTP/1.1\r\n";
$out .= "Host: $host\r\n";
$out .= "Connection: Close\r\n\r\n";
fwrite($sock, $out);
stream_set_blocking($fp, FALSE );
stream_set_timeout($sock, $timeout);
$info = stream_get_meta_data($sock);
while (!feof($sock) && !$info['timed_out']) {
$file .= fgets($sock, 4096);
$info = stream_get_meta_data($sock);
}
fclose($sock);
?>
[#7] alfi_ at yahoo dot com [2006-08-01 08:10:20]
If you are using fsockopen() to create a connection, first going to write into the stream and then waiting for the reply (e.g. simulating HTTP request with some extra headers), then stream_set_timeout() must be set only after the write - if it is before write, it has no effect on the read timeout :-(
Noticed at least on PHP/4.3.10
[#8] rtfm61 at yandex dot ru [2006-02-25 02:41:06]
stream_set_timeout() is not suitable for such files as UNIX-devices (/dev/...), i suggest to use select() instead with desirable timeout value - that works well.
[#9] ridera [2005-02-17 05:37:10]
I have found it required to add
"stream_set_blocking($fp, FALSE )"
prior to any fgets(), fread(), etc. to prevent the code from hanging up when remote files are called and the response is slow.